Adding upstream version 1.2.2.upstream/1.2.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 95 insertions, 0 deletions

diff --git a/src/gc-anchored.cpp b/src/gc-anchored.cpp
new file mode 100644
index 0000000..12eaa83
--- /dev/null
+++ b/src/gc-anchored.cpp
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Inkscape::GC::Anchored - base class for anchored GC-managed objects
+ *
+ * Authors:
+ *   MenTaLguY <mental@rydia.net>
+ *
+ * Copyright (C) 2004 MenTaLguY
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <typeinfo>
+#include "gc-anchored.h"
+#include "debug/event-tracker.h"
+#include "debug/simple-event.h"
+#include "debug/demangle.h"
+#include "util/format.h"
+
+namespace Inkscape {
+
+namespace GC {
+
+namespace {
+
+typedef Debug::SimpleEvent<Debug::Event::REFCOUNT> RefCountEvent;
+
+class BaseAnchorEvent : public RefCountEvent {
+public:
+    BaseAnchorEvent(Anchored const *object, int bias,
+                    char const *name)
+    : RefCountEvent(name)
+    {
+        _addProperty("base", Util::format("%p", Core::base(const_cast<Anchored *>(object))).pointer());
+        _addProperty("pointer", Util::format("%p", object).pointer());
+        _addProperty("class", Debug::demangle(typeid(*object).name()));
+        _addProperty("new-refcount", object->_anchored_refcount() + bias);
+    }
+};
+
+class AnchorEvent : public BaseAnchorEvent {
+public:
+    AnchorEvent(Anchored const *object)
+    : BaseAnchorEvent(object, 1, "gc-anchor")
+    {}
+};
+
+class ReleaseEvent : public BaseAnchorEvent {
+public:
+    ReleaseEvent(Anchored const *object)
+    : BaseAnchorEvent(object, -1, "gc-release")
+    {}
+};
+
+}
+
+Anchored::Anchor *Anchored::_new_anchor() const {
+    return new Anchor(this);
+}
+
+void Anchored::_free_anchor(Anchored::Anchor *anchor) const {
+    delete anchor;
+}
+
+void Anchored::anchor() const {
+    Debug::EventTracker<AnchorEvent> tracker(this);
+    if (!_anchor) {
+        _anchor = _new_anchor();
+    }
+    _anchor->refcount++;
+}
+
+void Anchored::release() const {
+    Debug::EventTracker<ReleaseEvent> tracker(this);
+    g_return_if_fail(_anchor);
+    if (!--_anchor->refcount) {
+        _free_anchor(_anchor);
+        _anchor = nullptr;
+    }
+}
+
+}
+
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :